Yes they should

All sports need to

Concussion science is always improving and it needs to be constantly worked on to limit the occurrences as much as possible without hurting the game. Desjardins got booted from a Sharks game the other night because a hit "looked bad" when it was shoulder to shoulder because referees are being taught that any hard hit is an illegal one and that's garbage, but players deserve constant efforts in attempting to protect them.

Yes, definitely

Violence is increasing in all sports and needs to be monitored. Additionally, the after effects of violence needs to be watched carefully. Repeated concussions can have lifelong effects and can be deadly. Concussion protocols need to be reconsidered. They will do nothing but help the players, both immediately and in the long run.

Yes, They Should

Hockey and its associated violence is very similar to that of football. Much like the National Football League, the National Hockey League should take the issue of player injury through concussion very seriously. The lasting effects of concussions are only beginning to be understood by science. We need to make sure players don't pay the ultimate price as a result.

No, They Should Not

Modern science knows what is best for the sports leagues of the United States of America. The National Football League has already shown how much the game can be changed for the worse when player safety is looked after in a manner that is overkill. The National Hockey League should not follow suit.